The color of the social medias are part of the color preset. We did that to give our design a consistency. If you want to change them, go to Ironband > Look and Feel. Scroll down to the bottom where you will see Custom CSS. Add this:

.social-networks [class^="icon-"],
.social-networks [class*=" icon-"]{
   color: #000000;
   background-color: #CCCCCC;
}

.footer-block .social-networks [class^="icon-"],
.footer-block .social-networks [class*=" icon-"] {
    color: #000000;
    background-color: #CCCCCC;
}

 Replace 000000 and CCCCCC by the color of your choice.